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3 years ago

Help me please PLEASEEE

Mathematics

2 answers:

vodka [1.7K]3 years ago

7 0

So you can do 1/2 and then divide it by 1/8.

To divide by a fraction, multiply by its reciprocal.
So;
1/2 / 1/8 = 1/2•8/1

1/2• 8 = 8/2
8/2= 4

So he can fill 4 mugs!!!

Brainliest if i helped!

Anestetic [448]3 years ago

4 0

Answer:

Step-by-step explanation:

Since he is only using 1/2 of that it would be 4

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I need help with 3. Determine whether each relation is a function.

algol [13]

So a function in math is where a relationship or expression involving one or more variables.

So, It would be yes it's a function, -2=1 yes it is 1=2 yes it is, 3=3 yes it is, and 4 1/2 is a 4 and a five (: Hoped this helps you!

Good luck!

7 0

4 years ago

Prove the formula for (d/dx)(cos−1(x)) by the same method as for (d/dx)(sin−1(x)). Let y = cos−1(x). Then cos(y) = and 0 ≤ y ≤ π

gtnhenbr [62]

Answer:

$\frac{d(cos^{-1}x )}{dx} = \frac{-1}{\sqrt{1-x^2} }$

Step-by-step explanation:

Given the differential (d/dx)(cos−1(x)), to find the equivalent formula we will differentiate the inverse function using chain rule as shown below;

let;

$y = cos^{-1} x \\\\taking \ cos\ of\ both\ sides\\\\cosy = cos(cos^{-1} x)\\\\cosy = x\\\\x = cosy\\\\\frac{dx}{dy} = -siny\\$

$\frac{dy}{dx} = \frac{-1}{sin y} \\\\from\ trigonometry\ identity,\ sin^{2} x+cos^{2}x = 1\\sinx = \sqrt{1-cos^{2} x}$

Therefore;

$\frac{dy}{dx} = \frac{-1}{\sqrt{1-cos^{2}y } }$

Since x = cos y from the above substitute;

$\frac{dy}{dx} = \frac{-1}{\sqrt{1-x^{2}} }$

Hence, $\frac{d(cos^{-1}x )}{dx} = \frac{-1}{\sqrt{1-x^2} }$ gives the required proof

5 0

4 years ago

In 2073 BS father's age was 7 times his daughter devyani's age. In 2081 BS father's age will be 3 times only his daughter's age.

Anna007 [38]

Answer:

2069.

Step-by-step explanation:

Let Devyani's age in 2073= x years and y be her fathers age Then:

y = 7x

- and in 8 years time ( 2081) we have:

y + 8 = 3(x + 8)

y = 3x + 24 - 8

y = 3x + 16. Eliminating y from the 2 equations:

7x = 3x + 16

4x = 16

x = 4.

So in 2073 she was 4 years old

Therefore she was born in 2069.

4 0

3 years ago

Which expression represents the phrase 5 less than a number

Murrr4er [49]

Answer:

$n-5$

Step-by-step explanation:

Let

n ------> a number

we know that

The algebraic expression that represent the phrase"5 less than a number" is equal to subtract 5 from the number or a number minus 5

$n-5$

4 0

3 years ago

the problitiy is that a sweet stawberry flavor is 0.8 what is the problity is that a sweet is orang flavor what is anwer

dsp73

Answer:

$\huge\boxed{Answer\hookleftarrow}$

Assuming that there are only 2 flavors of the sweet ⇻ strawberry & orange.

____________________

P (strawberry flavored sweet) = 0.8

P (orange flavored sweet) = ?

____________________

Now, we know that ➳ the value of probability ≤ 1. So, the probability of orange flavored sweets is less than 1.

____________________

So,

P (orange flavored sweet) = 1 - P (strawberry flavored sweet)

P (orange flavored sweet) = $\large\bold{1.0 - 0.8}$

P (orange flavored sweet) = $\large\bold{0.2}$

____________________

✐ The probability that the sweet is orange flavored is 0.2

____________________

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

# ꧁❣ RainbowSalt2²2² ࿐

4 0

3 years ago